Classic V2 Selectorized Back / Ab Combo by Muscle D Fitness - Dual Function Core MachineThe Classic V2 Back Ab Combo by Muscle D Fitness delivers a full range of core training in one robust, space saving unit. Built from heavy duty 11 gauge steel with double stitched commercial upholstery, this combo machine is engineered for rigorous use in any commercial gym or training facility. Designed for both back extension and abdominal crunch exercises, the Classic V2 features easy quick pop pin adjustment to switch between ab and low back